519914243257 has 2 divisors, whose sum is σ = 519914243258. Its totient is φ = 519914243256.

The previous prime is 519914243201. The next prime is 519914243267. The reversal of 519914243257 is 752342419915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435964396176 + 83949847081 = 660276^2 + 289741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-519914243257 is a prime.

It is not a weakly prime, because it can be changed into another prime (519914243267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259957121628 + 259957121629.

It is an arithmetic number, because the mean of its divisors is an integer number (259957121629).

Almost surely, 2^519914243257 is an apocalyptic number.

It is an amenable number.

519914243257 is a deficient number, since it is larger than the sum of its proper divisors (1).

519914243257 is an equidigital number, since it uses as much as digits as its factorization.

519914243257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The spelling of 519914243257 in words is "five hundred nineteen billion, nine hundred fourteen million, two hundred forty-three thousand, two hundred fifty-seven".